What should you know about lancing a paronychia?

Paronychia is inflammation or infection beside or beneath a fingernail or toenail. The skin may become red, swollen, warm, and tender, and a pocket of pus can form. Bacteria are common causes; yeast can contribute, especially when moisture and repeated irritation affect the nail fold. A clinician checks whether there is a drainable collection, an infection spreading beyond the nail fold, or a deeper problem involving the fingertip.

A small collection may need a sterile opening and drainage. Cutting or puncturing the area yourself can push infection deeper, injure the nail-forming tissue, or leave a wound that is difficult to clean.

Keep the finger or toe clean and dry, avoid biting or cutting the cuticle, and remove rings before swelling increases. Warm water soaks may ease discomfort for a mild early problem, but they do not replace assessment when pus, significant pain, or worsening swelling is present. Do not squeeze, lance, or share needles and tools.

A clinician may recommend drainage, wound care, or antibiotics for a bacterial skin infection when indicated. If the problem keeps returning, discuss nail trauma, moisture exposure, biting, manicures, and possible yeast involvement.

Arrange prompt medical care for visible pus, throbbing pain, rapidly increasing swelling, red streaks, fever, reduced finger movement, numbness, or swelling spreading into the fingertip. Seek urgent help if you feel very unwell, have severe pain out of proportion to the appearance, or have diabetes or reduced immunity. After drainage, return for review if pain, redness, warmth, or discharge increases.

Is there a collection that needs drainage, or is home care appropriate? Could this involve a yeast infection or another cause? Do I need antibiotics or a dressing? How should I protect the nail fold, and what should prompt a follow-up visit?